nav {
  justify-content: center;
  background-color: #000;
  padding: 10px;
  top: 0;
  left: 0;
  height: 80px;
  z-index: 100;
  margin-bottom: 30px;
}

.logo img {
  position: fixed;
  top: -10px;
  left: 10px;
  width: 125px;
  height: 125px;
}

.li_nav {
  display: inline-block;
  color: #fff;
  letter-spacing: 1.5px;
  font-size: 20px;
  font-weight: bold;
  margin-left: 35px;
  margin-top: 25px;
}

.li_hello {
  display: inline-block;
  color: #fff;
  letter-spacing: 1.5px;
  font-size: 20px;
  font-weight: bold;
  margin-top: 25px;
  font-style: italic;
}

.nav_li_center {
  position: absolute;
  left: 800px;
  top: -5px;
  font-size: 35px;
}

.li_nav:hover {
  border-bottom: 3px #fff solid;
  transition: 0.1s;
}

nav a {
  text-decoration: none;
  color: #fff;
  font-weight: bold;
}

.nav_li_left {
  float: left;
  font-size: 24px;
}

.nav_li_right {
  float: right;
  font-size: 24px;
  margin-right: 25px;
}